Translation of "biographer" into Chinese

Indeed, his “unfailing but occasionally unwarranted optimism,” a biographer noted, was one of his most outstanding characteristics.

事实上,一位传记作者写道,他的“可靠但有时并无保证的乐观”是他最杰出的特色。

Truman biographer David McCullough warns that about 50 years must pass before historians can really appraise a presidency.

杜鲁门传记作家戴维·麦卡洛警告历史学家,需要50年时间才能真正评价一个总统。